First , thanks a lot to share with me your experience !
My case seems to be different because my 4 hosts are the same model...
I need to shutdown the vcenter in order to activate evc and if i do this.... i wont be able to active evc....
So i will try tomorow the following things:
- create the second cluster as you said
- activate EVC
- move one esxi in the new cluster
- shutdown VC and PSC
- export in ovf the PSC and the VC
- deploy the three ovf in the esxi which is in the 'evc' cluster
- start VC and PSC
- activate EVC in the first original Cluster.
- shutdown psc and vc
- export in ovf the PSC and the VC
- deploy on the original esxi
- boot
- verify that evc is activated n both cluster
- migrate the esxi into the first cluster
- delete cluster
If some one see something better...
i would like to follow the KB and detach the VC and register into the new 'evc' cluster but i did not manage to access the datastore so unable to do this..
Anyway thanks again u all !!
Pete